File:Monkey saddle with three maxima.jpg
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摘要
| 描述 |
Русский: Обезьянье седло
English: The function z = -x^6-3*x^4*y^2-3*x^2*y^4-6*x^2*y-y^6+2*y^3 has an inflection point at the origin where there are three directions to go uphill and three directions to go downhill. Such a point is named a 'monkey saddle' since a monkey would need two places to put its legs and one for its tail.
I found the formula by multiplying three paraboloids together. Implemented in Geogebra: https://www.geogebra.org/3d/qgz7znyr Discussion: https://twitter.com/_tim_hutton_/status/1406338455840382977 |
| 日期 | |
| 來源 | File:Monkey saddle with three maxima.png |
| 作者 | Ferkel |
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| 日期/時間 | 縮圖 | 尺寸 | 使用者 | 備註 | |
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| 目前 | 2024年9月28日 (六) 09:54 | | 1,185 × 851（73 KB） | Matsievsky | Uploaded own work with UploadWizard |
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